Correction factor 1.12 1.06 1.00 0.94 0.87 0.79
MHJYV煤矿用加强型线芯聚乙烯绝缘聚氯乙烯护套通信电缆用于机械损伤较高的平巷和斜巷。
HYA：铜芯实心聚烯烃绝缘挡潮层聚乙烯护套市内通信电缆。
HYAT：铜芯实心聚烯烃绝缘填充式挡潮层聚乙烯护套市内通信电缆。
注：ZR-阻燃G-隔氧层NH-耐火三、生产范围型号芯数标称截面（mm2)型号芯数标称截面（mm2)额定电压（KV）额定电压（KV）0.6/10.6/16/6(6/10)8.7/10(8.7/15)26/35(26/45)CUALCUALCUA。
变频器与变频电机问电缆均需采用对称电缆结构，对称电缆结构有3芯和3+3芯两种，3+3芯电缆结构是将三大一小四芯绝缘线芯中第四芯(中性线芯)分解为三个截面较小的绝缘线芯，把三大三小线芯对称成缆，对于6/10kV变频电机专用电缆，该电缆结构与6/10kV普通电力电缆有所不同，普通电力电缆是将三根绝缘线芯。
四.线芯对数：1～61对kvv2芯＊0.75控制电缆kvv2芯＊1.0控制电缆kvv2芯＊1.5控制电缆kvv3芯＊0.75控制电缆kvv4芯＊0.75控制电缆kvv5芯＊0.75控制电缆kvv6芯＊0.75控制电缆kvv7芯＊0.75控制电缆kvv8芯＊0.75控制电缆kvv10芯＊0.75控制电。
，PLC种类很多，一般PLC都有数字输入端口可以直接接数字信号。
3，如果PLC没有模拟量输入端口，需要配备相同型号的模拟量拓展模块。
一般PLC都会配1-2套模拟量端口。
4，传感器使用过程中要注意电源和信号，不要弄反，不然可能会损坏PLC。
5，传感器类型很多，有二线制，三线制，四线制等等，接线的时候一定要分清，必要的时候需要加装信号隔离器。
6，PLC使用过程中应注意电源的输入输出端，信号的输入输出端，安全使用。
Flame-retardant cables are characterized by a delay in the spread of flame along the cable so that the fire does not expand. Because of its low cost, it is a kind of cable widely used in fireproof cable. Under the condition of single cable or into a bunch of laying, cable to know when the spread of flame can be controlled within a certain range, so it can avoid fire spreading combustion and lining major disasters, which cable line of fire prevention level.
Purpose: the self-supporting non-filled cable is suitable for the urban and township telecommunication lines of local telecommunication network, and also for the special network lines connecting to the public network. It is economical and practical to use the same outer protective layer for hoisting line and cable. The mechanical and electrical properties of the cable remain unchanged under conditions of 30~C - 60~C. Structure: wire: annealed bare copper wire, copper wire diameter is 0. 4, 0. 50, 0. 60, 0. 70, 0. 80, 0. 90 mm. Insulating material: high density polyethylene or ethylene-propylene copolymer. The color of the insulated wire is in accordance with the full chromatographic standard. Pair of insulated wires: two different colored insulated wires are twisted in pairs according to different pitch and are identified by a specified chromatographic combination. Core structure: with 25 pairs as the basic unit, more than 25 pairs of cables are assembled according to the unit, each unit is wired with the unit of specified chromatogram to identify different units. 100 pairs or more of cables plus 1% of the reserve pair. Core tape: wrap with a polygrease film tape. Shielding: the two sides are overlapped with or without corrugated metal strip, beyond the cable core of the longitudinal capsule. The plastic film coated on the surface of the shielding belt and the bonding sheath of the protective layer: black low density polyethylene. Hoisting line: the hoisting line is 7 strands of galvanized steel strand, nominal outside diameter is 6. 3 and 4 mm. The tensile strength of two types of 75mm is not less than 3000kg and 1800kg respectively. The suspension wire is coated with thermoplastic paint to prevent the steel wire from corrosion. Identification and length marking
Model specification of frequency conversion cable: series code BP frequency conversion cable; Insulation code YJ crosslinked polyethylene insulation; V polyvinyl chloride sheath; E halogen-free low smoke polyolefin sheath; Shielding code P copper wire braided shielding; P1 copper wire wound shielding; P2 copper band shielding; P3 aluminum strip shielding; TP2 concentric conductor + copper band shielding structure; P1-2 double shielding of copper wire winding + copper tape wrapping; PX12 copper band shielding + tin coated copper wire braided double shielding; Armor code 22 steel belt armor; 32 steel wire armouring; Flame retardant code ZR common flame retardant type; WDZ low smoke halogen-free flame retardant type.
四、型号、名称、工作条件型号名称型号名称SYV－50－3实芯聚乙烯绝缘同轴射频电缆SYV－75－3实芯聚乙烯绝缘同轴射频电缆SYV－50－5－1实芯聚乙烯绝缘同轴射频电缆SYV－75－5－1实芯聚乙烯绝缘同轴射频电缆SYV－50－5－2实芯聚乙烯绝缘同轴射频电缆SYV－75－。
KVV22铜芯聚氯乙烯绝缘聚氯乙烯护套钢带铠装kvv22电缆450/7504-370.75-10敷设在室内，电缆沟、管道直埋等能承受较大机械外力的固定场合。
KVVP阻燃铜芯聚氯乙烯绝缘聚氯乙烯护套kvvp电缆450/7504-370.75-10敷设在室内，电缆沟、管道等要求屏蔽的固定场合。
Sheathed control cable insulation resistance: each conductor and the rest of the grounding wire core, control cable is more than 10000 m Ω. Km, more than 3000 m Ω HYAT cable. Km.
plc步进指令的编程技巧运用步进指令编写顺序控制程序时，应确定整个控制系统的流程，将复杂的任务或过程分解成若干个工序（状态），最后弄清各工序成立的条件、工序转移的条件和转移的方向，这样就可画出顺序功能图。
根据控制要求，采用STL、RET指令的步进顺序控制可以有多种方式。
如所示是单流程顺序功能图，图中M8002是特殊辅助继电器，仅在运行开始时瞬间接通，产生初始脉冲。
如所示是选择性分支与汇合状态转移方式。
其灵活的组合形式、多种护套更可适用不同的场合。
RS485/232通讯电缆适用于EIARS-232/422通讯网络，是楼宇自控、工业控制网络、电力自动化等通讯网络的常用电缆型号。
RS485/232通讯电缆适用于EIARS-232/422通讯网络，是楼宇自控、工业控制网络、电力自动化等通讯网络的常用电缆型号。
KVV 铜芯聚氯乙烯绝缘聚氯乙烯护控制电缆。
KVVR铜芯聚氯乙烯绝缘聚氯乙烯护套控制软电缆。
KVVP 铜芯聚氯乙烯绝缘聚氯乙烯护套铜线编织屏蔽控制电缆。
KVVRP铜芯聚氯乙烯绝缘聚氯乙烯护套铜线编织屏蔽控制软电缆。